Elevated Lp(a) raises repeat revascularisation risk after PCI, meta-analysis of eighteen studies (Acta Cardiol 2026)

Background: Lipoprotein(a) (Lp(a)) is a proatherogenic lipoprotein associated with increased cardiovascular risk and is minimally responsive to statins or lifestyle changes. While Lp(a) is linked to adverse cardiovascular events, its role in predicting repeat revascularization after percutaneous coronary intervention (PCI) remains unclear. This review evaluates the relationship between Lp(a) levels and coronary revascularization outcomes.

Methods: A systematic review and meta-analysis of studies from MEDLINE and EMBASE through June 18, 2025, evaluated the association between elevated Lp(a) and revascularization outcomes post-PCI. Random-effects models using the DerSimonian-Laird method were used to pool odds (ORs) and hazard ratios (HRs). Heterogeneity was assessed using the I2 statistic and Cochran's Q test, and publication bias was evaluated with Egger's regression test.

Results: Twenty studies were included in the systematic review, of which eighteen were included in the meta-analysis. Elevated Lp(a) levels were associated with a higher risk of any repeat revascularization, with pooled OR 1.33 (95% CI: 1.17-1.52) and HR 1.15 (95% CI: 1.05-1.25). High Lp(a) was also linked to increased risk of target vessel revascularization (TVR) (OR 1.42; 95% CI: 1.12-1.81). A non-significant trend towards increased target lesion revascularization (TLR) was observed (OR 1.25; 95% CI: 0.96-1.64).

Conclusion: Elevated Lp(a) levels were associated with a higher risk of repeat revascularization and TVR, with a non-significant trend towards increased TLR. Further studies are warranted to confirm these findings and explore the potential benefit of Lp(a)-lowering strategies.